Content Requirements PA

Define Invoice Type

For each invoice, an invoice type must be defined on header level. The basic options are :

Type	Not (fully) Paid	Already Paid
Goods Invoice	B1	B2
Service Invoice	S1	S2
Mixed Invoice	M1	M2

This data element needs to be delivered to Billit. Specification will follow. In the mean time, Billit sends with the Billit default value S1.

Define Customer Identifier

Find the identifiers of the customer. Include them in Billit.

More info : Identifiers PA

Accepted Invoice Format of the Receiver - Determined by Billit

Sending the invoices to the receiver must be in a format registered by the receiver. Billit will automatically select a format that is registered by the receiver, you do not have to select the format yourself.

Example of API content of an Invoice

{
    "OrderNumber": "227010068_Simple2",
    "OrderDate": "2026-05-06T00:00:00",
    "ExpiryDate": "2026-06-04T00:00:00",
    "OrderType": "Invoice",
    "OrderDirection": "Income",
    "Customer": {
        "Nr": "0001001999",
        "Name": "FR demo receive",
        "Addresses": [
            {
                "AddressType": "InvoiceAddress",
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR"
            },
            {
                "AddressType": "DeliveryAddress",
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR"
            }
        ],
        "Street": "place demo receive 987",
        "Zipcode": "75001",
        "City": "PARIS",
        "CountryCode": "FR",
        "Mobile": "+32475366999",
        "Email": "[email protected]",
        "VATNumber": "FR37127399999",
        "PartyType": "Customer",
        "VATLiable": true,
        "Language": "FR",
        "DisplayName": "FR demo receive",
        "VATDeductable": true,
        "Identifiers": [
            {
                "IdentifierType": "CTC",
                "Identifier": "127369999_DEMO",
            },
            {
                "IdentifierType": "SIRENE",
                "Identifier": "127362116",
            }
        ],
        "SendUBL": true,
        "SendPDF": true
    },

    "OrderLines": [
        {
            "Quantity": 1.0,
            "UnitPriceExcl": 400.0,
            "Description": "just a single line",
            "VATPercentage": 20.0,
            "Unit": "PCE",
            "DescriptionExtended": "some extended description"
        }
    ],
    "OrderTitle": "Simple",
    "Reference": "4512345678",
    "PaymentReference": "365878545",
    "Comments": "additional info",
    "Currency": "EUR",
    "DeliveryDate": "2026-04-27T00:00:00"
}